Find data in Analysis of Biological Data

A utility function to assist users to locate data sets in Analysis of Biological Data within the abd package.

Usage

abdData(
  ...,
  chapters = 1:21,
  types = c("Example", "Problem"),
  numbers = 1:100,
  pattern = "*",
  ignore.case = TRUE
)

Arguments

...: values for any of chapters, types, or pattern. Which is meant will be inferred from the type of object supplied. This allows users to specify these values in any order and without naming.
chapters: a numeric vector of chapters to search within
types: a sub-vector of c('Example','Problem')
numbers: a numeric vector of problem numbers
pattern: a pattern to use for regular expression matching against the name of the data frame.
ignore.case: should case be ignored when matching pattern?

Value

A data frame describing data sets from abd that match the search criteria, or NULL if there are no matches.

Author

Randall Pruim (rpruim@calvin.edu)

Examples


# find all data from examples in chapters 3 and 4
abdData(3:4, "Example")
#>                 name chapter    type number sub
#> 14     GlidingSnakes       3 Example      1    
#> 15       SpiderSpeed       3 Example      2    
#> 16 SticklebackPlates       3 Example      3    
#> 24  HumanGeneLengths       4 Example      1    

# order doesn't matter
abdData("Example", 3:4)
#>                 name chapter    type number sub
#> 14     GlidingSnakes       3 Example      1    
#> 15       SpiderSpeed       3 Example      2    
#> 16 SticklebackPlates       3 Example      3    
#> 24  HumanGeneLengths       4 Example      1    

# look for data sets with Example in their name.
abdData(pattern="Example")
#> NULL

# look for data sets with Exercise in their name.
abdData("Exercise")
#>                     name chapter    type number sub
#> 112 ProgesteroneExercise      17 Problem      3